tests: avoid awk+printf+\xHH portability trap

* tests/init.cfg (hex_printf_): Rewrite in terms of printf and sed.
Using awk's printf with \xHH in the format string was not portable
to the awk of Solaris 10, AIX 7 or HP-UX 11.23, as reported in
http://debbugs.gnu.org/18987.
* tests/word-multibyte: Use printf rather than hex_printf_,
and give the character we're printing a name: e_acute (rather
than A-grave), since that is used in other tests.
a trailing \n in the format string, adjust by removing it, and
instead invoking echo.
* tests/multibyte-white-space: Simply remove each trailing \n.
They were not needed.

3 files changed, 8 insertions, 7 deletions

diff --git a/tests/init.cfg b/tests/init.cfg
index 9342d3d6..1fb25f53 100644
--- a/tests/init.cfg
+++ b/tests/init.cfg
@@ -155,10 +155,10 @@ or use the shortcut target of the toplevel Makefile,
   fi
 }
 
-# Like printf with a single argument.
-# The difference is that while some printf implementations fail to
-# handle \xHH escapes, no awk implementation has that problem.
+# Like printf with a single argument, but that argument must be a
+# sequence of four-byte strings \xHH where each H is a hexadecimal byte.
 hex_printf_()
 {
-   ${AWK-awk} 'BEGIN { printf "'"$1"'" }' </dev/null
+  printf $(printf '\\%o' \
+    $(printf %s "$1"|sed 's,\\x\([0-9a-fA-f][0-9a-fA-f]\), 0x\1,g'))
 }
diff --git a/tests/multibyte-white-space b/tests/multibyte-white-space
index bb1bdaf6..abd4dc55 100755
--- a/tests/multibyte-white-space
+++ b/tests/multibyte-white-space
@@ -58,9 +58,9 @@ EOF
 fail=0
 
 for i in $utf8_space_characters; do
-  hex_printf_ "$i\n" | grep -q '^\s$' \
+  hex_printf_ "$i" | grep -q '^\s$' \
       || { warn_ "$i FAILED to match \\s"; fail=1; }
-  hex_printf_ "$i\n" | grep -q '\S'
+  hex_printf_ "$i" | grep -q '\S'
   test $? = 1 \
       || { warn_ "$i vs. \\S FAILED"; fail=1; }
 done
diff --git a/tests/word-multibyte b/tests/word-multibyte
index f2caf977..ba37b85d 100755
--- a/tests/word-multibyte
+++ b/tests/word-multibyte
@@ -4,7 +4,8 @@
 
 require_en_utf8_locale_
 
-hex_printf_ '\xc3\xa1\n' > in || framework_failure_
+e_acute=$(printf '\303\251')
+printf "$e_acute\n" > in || framework_failure_
 LC_ALL=en_US.UTF-8
 export LC_ALL